Help with wc and subtraction needed

[Matthew Benjamin]

Very sweet that work perfect, thanks!


On 7/12/07, Todd Zullinger <tmz at pobox.com> wrote:
>
> Matthew Benjamin wrote:
> > I have a command that I am trying to read a particular amount of
> > lines with
> >
> > wc -l somefile | awk '{print $1}'
> >
> > when it givs the number of lines, I am trying to find out how to use
> > that number in an addition problem. Can someone help me with that?
>
> lines=$(wc -l somefile | awk '{print $1}')
> res=$(($lines + 42))
>
> That's bash specific, so depending on how portable you want the script
> to be, you'd need to do things slightly differently.  There are a ton
> of ways you could do something like this.  Some bash guides might be
> helpful:
>
> BASH Programming - Introduction HOW-TO
> http://tldp.org/HOWTO/Bash-Prog-Intro-HOWTO.html
>
> Advanced Bash-Scripting Guide
> http://tldp.org/LDP/abs/html/
>
> --
> Todd        OpenPGP -> KeyID: 0xBEAF0CE3 | URL: www.pobox.com/~tmz/pgp
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> I advise you to go on living solely to enrage those who are paying
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>     -- Voltaire
>
>
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-- 
mB.
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